Digital rights management scheme based on redactable blockchain and perceptual hash.

In the digital age, digital asset is becoming increasingly important and digital rights management system can provide protection for digital content. However, the existing distributed digital rights managements are unable to fully detect plagiarized and illegally sensitive digital content, which greatly affects the benefit of content owner and reduces the confidence of users. A distributed management system for digital rights based on redactable blockchain and perceptual hash is proposed in the paper. The perceptual hash is adopted to detect similarities and judge whether or not it is the original piece. In addition, an incentive scheme based on redactable blockchain is proposed to ensure that plagiarized and illegally sensitive digital content can be removed in a timely manner when uploaded to the blockchain. Evidence of rights confirmation is provided by use of hidden watermarks in copyright dispute. At the same time on-chain detection and off-chain storage are applied to effectively reduce the storage burden of the blockchain. Smart contracts are established to ensure fairness in content transactions. Finally, the correctness and efficiency of the scheme is proven by simulation experiments. [ABSTRACT FROM AUTHOR]